Electbic vibrator



R. STOCKINGER.

ELECTRIC VIBRATOR.

APPLICATION FILED JUNE 25, 1910.

Patented Sept. 9,1919.

INVENTOR .AQ? flak/57x7 WITNESSES:

ATTORNEY RUDE srocxmenn, or MANIT WOC, WISCONSIN.

ELECTRIC VIBRA'IOR.

Specification of Letters Patent.

Patented Sept. 9, 1919.

Application filed June 25, 1918. Serial No. 241,799.

To all whom it may concern:

Be it known that I, RUDE STOGKINGER, a citizen of the United States, andresident of Manitowoc, in the county of Manitowoc and State oflVisconsin, have invented certain new and useful Improvements inElectric Vibrators; and I do hereby declare that the following is afull, clear, and exact description thereof.

This invention relates to certain new and useful improvements invibrating devices of that type shown and described in a patent issued tome December 4:, 1917, No. 1,249,236,

It is primarily an object of the present invention to provide avibrating device of an exceedingly simple and'compact nature andwhich,due to the peculiarities of construction, grounding of the current usedin its operation is prevented.

A more specific object of the invention resides in the manner ofresiliently suspendlng the electro-magnet whereby upon deterioration ofthe spring the same may be replaced without the necessity ofdisassembling the magnet.

Another object of the invention resides in the manner of securing thelaminae of both the armature and coil together to eliminate eddycurrents being set up therein.

A further object of the invention is to provide a suitable casing inconnection with a device of this character, which is adapted to carry aterminal block, and prevents foreign substances from accumulating u onthe.

working parts and decreasing the e ciency of the device.

With the above and other objects in view which will appear as thedescription proceeds my invention resides in the novel features ofconstruction, combination and arrangement of parts substantially asdescribed and more particularly defined by the appended claims, it beingunderstood that such changes in the precise embodiment of this inventionmay be made within the scope of the claims.

In the accompanying drawing I have illustrated one complete example ofthe physical embodiment of my invention constructed according to thebest mode I have so far devised for the practical application of theprinciples thereof in which:

Figure 1 is a sectional view of the device taken on the line of l1 ofFig. 2, and

Fig. 2 is a sectional view indicated by the line 22 of Fig. 1.

perspective view of the 6, the side arms of which are U-shaped and havesecured therebetween a U-shaped laminated core 7. The core is providedwith the usual winding 8. The laminae which make up the core are securedtogether and to the arms of the yoke 6 by non-magnetic rivets or bolts9. Secured to the base plate 1 is an armature 10 made up of laminationsheld together by the non-magnetic rivets 10.

It will be seen that the core laminae 7 and the laminae of the armatureare parallel. Due to this and to the fact that the U-shaped constructionof the core laminae exposes a greater surface of the coil to theatmosphere over-heating which is generally the case is prevented.

Secured to the base plate is a cover or casing 11 which carries aterminal block 12. This terminal block is made of suitable insulatingmaterial and is provided with con tact members to which the coil isconnected.

It will be seen that the base plate 1 is provided with a suitable workengaging lug 13 which facilitates ready attachment of the device to thepattern plate or article that itis desired to vibrate. Carried upon thebolts 14 which secure the spring 4: to the supporting'members arespacing plates 15 adapted to hold the electro-magnet centrallypositioned between the supporting members.

From the foregoing description taken in connection with the drawing itwill be seen that the electro-magnet is loosely mounted upon thesupporting spring 4. Therefore, should the spring become deterioratedthrough successive use a new one can be readily inserted between theyoke 6 and laminae 7 without necessitating disassembling of theelectro-magnet.

The outer laminae of the core are provided with flanged ends 7 adaptedto retain a fiber or insulating plate 16 which holds the windmg 8 uponthe arms of the core.

It will be readily seen that in constructing a base 1 of insulating ornon-conductive.

material, the current which successively energizes the electro-magnetand causes the same to exert a series of taps upon the armature carriedby the base plate, will be prevented from grounding, should the windingbecomeshort-eircuited with. the casing due to defective insulation.

What I claim. as new is 1. A device of the class described comprising anon-conductive base plate, supporting members secured to the base plate,a fiat spring mounted won the supporting members, a yoke adapted tostraddle said spring, a U-shaped laminated core secured within saidyoke, magnetic windings surrounding said core, and a laminated armaturemounted on said baseplate.

2. A device of the class described comprising a base plate, spacedsupporting members secured to the base plate, a flat spring mountedonthe supporting members, a laminated core carried upon said spring,spacing plates for holding the core centrally of the supporting members,and an armature secured to the base plate.

3. A device of the class described comprisi-ng a non-conductivebaseplate, s )aced sup porting members secured to the base plate, a fiatspring mounted upon the supporting members, a yoke adapted to straddlesaid spring, a 'U-shaped laminated core secured within said yoke,magnetic windings surrounding: said core, flanges projecting from theouter laminae of the core, an insulating plate carried by said flangesfor retaining the windings, and a laminated armature mounted on saidbase plate.v

In testimony that I claim the foregoing I have hereunto set my hand atManitowoc, in the county of Manitowoc, and State of Wisconsin.

RUDE STOCKINGER.

copies oithis patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, 1).;(13

